03c80c12b8
Add yet another ugly hack to iscsiboot.c, this time to allow the user to inhibit the shutdown/removal of the iSCSI INT13 device (and the network devices, since they are required for the iSCSI device to function). On the plus side, the fact that shutdown() now takes flags to differentiate between shutdown-for-exit and shutdown-for-boot means that another ugly hack (to allow returning via the PXE stack on BIOSes that have broken INT 18 calls) will be easier. I feel dirty.
109 lines
1.9 KiB
C
109 lines
1.9 KiB
C
#ifndef _GPXE_DEVICE_H
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#define _GPXE_DEVICE_H
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/**
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* @file
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*
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* Device model
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*
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*/
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#include <gpxe/list.h>
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#include <gpxe/tables.h>
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/** A hardware device description */
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struct device_description {
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/** Bus type
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*
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* This must be a BUS_TYPE_XXX constant.
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*/
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unsigned int bus_type;
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/** Location
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*
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* The interpretation of this field is bus-type-specific.
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*/
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unsigned int location;
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/** Vendor ID */
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unsigned int vendor;
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/** Device ID */
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unsigned int device;
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/** Device class */
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unsigned long class;
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/** I/O address */
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unsigned long ioaddr;
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/** IRQ */
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unsigned int irq;
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};
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/** PCI bus type */
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#define BUS_TYPE_PCI 1
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/** ISAPnP bus type */
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#define BUS_TYPE_ISAPNP 2
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/** EISA bus type */
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#define BUS_TYPE_EISA 3
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/** MCA bus type */
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#define BUS_TYPE_MCA 4
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/** ISA bus type */
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#define BUS_TYPE_ISA 5
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/** A hardware device */
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struct device {
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/** Name */
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char name[16];
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/** Device description */
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struct device_description desc;
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/** Devices on the same bus */
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struct list_head siblings;
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/** Devices attached to this device */
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struct list_head children;
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/** Bus device */
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struct device *parent;
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};
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/**
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* A root device
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*
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* Root devices are system buses such as PCI, EISA, etc.
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*
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*/
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struct root_device {
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/** Device chain
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*
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* A root device has a NULL parent field.
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*/
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struct device dev;
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/** Root device driver */
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struct root_driver *driver;
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};
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/** A root device driver */
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struct root_driver {
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/**
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* Add root device
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*
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* @v rootdev Root device
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* @ret rc Return status code
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*
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* Called from probe_devices() for all root devices in the build.
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*/
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int ( * probe ) ( struct root_device *rootdev );
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/**
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* Remove root device
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*
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* @v rootdev Root device
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*
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* Called from remove_device() for all successfully-probed
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* root devices.
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*/
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void ( * remove ) ( struct root_device *rootdev );
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};
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/** Declare a root device */
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#define __root_device __table ( struct root_device, root_devices, 01 )
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#endif /* _GPXE_DEVICE_H */
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